TUFF / TUWW Tied Universal
Two metal bellows elements connected by a centre spool and fitted with flanges or pipe weld ends, with movement control tie rods attached to the joint hardware. The joint is generally fitted with welded (fixed in place) tie rod washers as movement restraining stops, or alternativly can be with threaded rod as the tie rod utilising adjustable nuts as the movement restraining stops. This latter method is generally referred to as jacking rods (i.e. JUFF Joints).
This joint is for applications where large amounts of lateral movement must be absorbed without imposing pressure thrust forces on the piping system.
Tie rod support lugs attached to the centre spool are provided to assist in stabilising the centre spool.
Suitable for large lateral (offset) movements controlled by the tie rods.
Manufactured to the guidelines laid down in the Standards of the Expansion Joint Manufacturers Association Inc. (EJMA).
Pressure Rating – standard joints
4, 10 and 20 bars – subject to pressure capability of attached hardware.
Bore Size Range – standard
50 – 1500mm
Type TUFF – fixed flanges both ends
Type TUWW – pipe weld ends both ends
Type TUFW – flange one end, weld end the other
Type TUFV – fixed flange one end, floating (swivel) flange the other
This joint is a low cost alternative to hinged and gimbal joints but should only be used where precise control of movements is not necessary.
Pipework System Notes
Tie rod hardware is attached to contain pressure thrust forces and in general main anchors are not required.
RADCOFLEX recommends you consult your pipework engineer on pipework design and expansion joint selection.
Full technical specification booklets are available from RADCOFLEX to assist.